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生态学杂志 ›› 2022, Vol. 41 ›› Issue (7): 1297-1306.doi: 10.13292/j.1000-4890.202207.013

• 黄河流域生态保护与修复专栏 • 上一篇    下一篇

黄河故道安徽段浮游植物群落结构特征及其与环境因子关系

赵秀侠1,2,卢文轩1,2,季索菲1,2,方婷1,2,杨坤1,2,高娜1,2,侯冠军1,2*     

  1. 1安徽省农业科学院水产研究所, 合肥 230001;2水产增养殖安徽省重点实验室, 合肥 230001)
  • 出版日期:2022-07-10 发布日期:2022-07-08

Relationships between phytoplankton community structure and environmental factors in the old course of Yellow River at Anhui Section.

ZHAO Xiu-xia1,2, LU Wen-xuan1,2, JI Suo-fei1,2, FANG Ting1,2, YANG Kun1,2, GAO Na1,2, HOU Guan-jun1,2*   

  1. (1Fisheries Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230001, China; 2Key Laboratory of Freshwater Aquaculture and Fishery Enhancement of Anhui Province, Hefei 230001, China).
  • Online:2022-07-10 Published:2022-07-08

摘要: 为明晰黄河故道水域生态完整性与生物多样性状况,于2018年对黄河故道安徽段浮游植物群落结构进行了调查。结果表明:共鉴定浮游植物7门46属94种,绿藻门种类最多,为20属51种,占总种类数的54.26%;其次为硅藻门,为11属17种,占总种数的18.09%;黄河故道浮游植物丰度为0.507×105~8.406×105 cell·L-1,平均为2.875×105 cell·L-1,浮游植物生物量为0.039~0.926 mg·L-1,平均为0.254 mg·L-1;蓝藻门与绿藻门是浮游植物丰度主体,绿藻门与甲藻门是生物量组成的主体;运用浮游植物多样性与均匀度指数评价黄河故道水质现状为β中污轻污染水平;单因素相似性分析和非度量多维尺度分析发现,不同季节样点间浮游植物群落结构差异达显著水平(r=0.625,P<0.05),季节分化明显;浮游植物群落结构与水环境因子的冗余分析结果显示,不同季节影响浮游植物群落组成及分布的环境因子不同,铵态氮、水温、水深、溶解氧是影响浮游植物群落组成的主要环境因素。研究结果可为黄河故道水资源保护与生态修复提供依据。

关键词: 黄湖故道安徽段, 浮游植物, 环境因子, 冗余分析

Abstract: In order to understand the ecological integrity and diversity in the old course of Yellow River, we investigated the phytoplankton community in the old course of Yellow River at Anhui Section in 2018. A total of 94 phytoplankton species, which belonged to 7 phyla and 46 genera, were recorded. Chlorophyta species (20 genera, 51 species) and Bacillariophyta species (11 genera, 17 species) accounted for 54.26% and 18.09% of the total species number, respectively. The abundance and biomass of phytoplankton were in the range of 0.507×105-8.406×105 cell·L-1 and 0.039-0.926 mg·L-1, with average values of 2.875×105 cell·L-1 and 0.254 mg·L-1, respectively. Cyanophyta and Chlorophyta dominated the abundance of phytoplankton, while Chlorophyta and Dinophyta dominated the biomass. Biological evaluation of water quality indicated that the water of the old course of Yellow River at Anhui Section was at β secondary to light pollution level. Results of similarities and non-metric multidimensional scaling analysis showed that phytoplankton community structure significantly differed among sampling seasons (r=0.625,P<0.05). The results of redundancy analysis showed the environmental factors affecting phytoplankton community composition and distribution varied across different seasons, and ammonium nitrogen, water temperature, water depth, and dissolved oxygen were the major environmental factors affecting phytoplankton community composition. Our results could provide basis for water resources protection and ecological restoration in the old course of Yellow River.

Key words: the old course of Yellow River at Anhui Section, phytoplankton, environmental factor, redundancy analysis.